Process of making duplicate sound-records.



FATENTBDJUNE 4, i907,

J. W. AYLSWORTH. PROCESS OF MAKING DUPLICATE SOUND RECORDS.

APPLICATION FILED MAY 31, 1906. RENEWED APR. 23, 1907- .iyh]

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mamas. 'PATENTBD JUNE 4, 1907.

J. W. AYLSWORTH. PROCESS OF MAKING DUPLICATE SOUND REGORDS.

APPLICATION FILED MAY 31, 1906. RENEWED APR. 23, 1907.

4 SHEETSSHEBT 2 F F F 14 7 i /Wat My Mm No. 855,606. PATENTED JUNE 4,1907. J. w. AYLSWORTH.

PROGESS OF MAKING DUPLICATE SOUND RECORDS. APPLIGATION FILED MAY 31.100a. 2211mm mamas, 1907.

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I M 0 M M 7 m 1 PATENTED JUNE 4;, 190? J, W. AYLSWORTH. v PROCESS OFMAKING DUPLICATE SOUND RECORDS.

APPLICATION FILED MAY 31. 1906. RENEWED APR. 23 1907.

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ll, 0 FAST QRANG NlTW JERSEY, ASSIGNOR TO COMPANY, OF W 1ST ORANGE. NEWJER llY, A CORPU- Specification of Letters Patent ,Patented. June 4,1907.

Application filed Hey 31.1906. Renewed April 23,1907. Serial No 369,755-

material, in which the ant reproduction be ohbody or support therefor tand ioughnietei'el receiving a. record suroeing- Welded together so lysingle homowill more fully herel claim.

iinpi'ov cess is one inwhich the l in a state or in solid orpevw m isanti dueed into e rapidly r0- mold, as :2 describe in applications 31m,1905, Serial No. 316,250 and 1mm, Serial No. 317,082 and 33%, the outerlsyerl 'ng first formed by m 'zil force oe'veloged and, when d issuflicii'antly' set but :5 slightly plastic, the l llilr o oousui'iuzethe inner or main layer is introcuced so to he lllllllllEtlG-lY v. eldedto V. outer layer.

The process also contemplates the carrying on of operations by which theinterior of the i'ecocd may oesuitebly developed to it the supportinginendrels of talking machines of the phonograph type, although if onexpending: msndrl is employed asjdisclosed' in the application ofriylsworth and Dyer, filed May 8th, 1906, Serial No. 315,716, noseparate lh'iishing operation is necessary, since when e i (is remoedfroin the molds after they will, as an inherouter layer of e tough,

record, is; and from which a ent result of the process, be formed withperfectly smooth cylindrical bores.

In order that the invention may he better understood, attention isdirected to the accompanying drawings, forming pert of thisspecification, in Which Figure 1, is a. longitudinal sectional view ofthe improved duplicate phonograph record, Fig. 2, a. similar View or"the rotating mold, showing the formation of the record thereon, Fig. 3,a. similar view illustrating the operadon of tapering the bore of therecord when desired, while still in a plastic condition with in themold, 4, a similar view illustrating lhe operation. of forming therecord on its l')0l8 with series of concentric rlbs, Fig. 5, o

similar view, showing the reaming off the le cold, to taper its here,Fig. 6, a. section on "he line 6-6 of Fig. 5, Fig, 7,2111 end viewpartly in secsion, showing convenient spperetus tor rotating and coolingthe mold, F 1g. e. longiiudinel sectional viewoi i .1.,, I 2 M16eppaieius used E01 hmshing chebore 01 the record, Wmle in more 01: lessplastic Within the mold, the section being taken on the line 88 of Q,Fig. 9, a plan,

view of the same with the mold and record removes, end Fig. 19, an endview,

In. all of these views corresponding parts are represen-zed my the somenumerals of referenoe:

The mold 1 isof tubular f0rm;-carrying on its more the representation inrelief of the record to be duplicated and is produced in any suitableand convenient way, preferably by s process of vecuous deposit, as isWell known in the art. This mold is provided with stationery end flange2, carrying the usuel engraved matter for identifying the record, andwith s removable end flange 3, adapted to be secured in place in anysuitable Way. While the record is being formed in theniold, the letteris roteted so as to cause the material to be uniformly distributed overthe record surface by reason of the centrifugal force developed.Anysuita-hle mechanism for this purpose may be used, but in "lg. 7, Iillustrate a device of the character described in my application filedMay 11th, 1906, SQIlalNO. 316,250, above referred to, and comprising 2.pair of supporir record surface, l lllSGl ter is admitted, as i ilescrihing rollers 1 on which the mold carried,

' for fricihe mold a belt and a rubber i'zice l (lr' tionzilly engagingand roll said driving roller lacing row and pulleys 7 and 2%.

lvl atei'iiil may he introduced mold in a n'iolte state, moid heingsuitably heated so lL-H to prm it the ma erial from coiiggealingthereon. and to permit the material to remain in :i per ietly lluidstate While it is being distributed over the in my szrirl appli cation,Serial No 316250; or instead, the mold need not be heated *Jrorirlsd itis very thin and the material of sullicient hulk, and is heated to a.sufficient extent as to bring the temperature of the molilu'p to orabove the melting point ol the material, l. disclose in my applicationrial No. 317,083: orinstead, material may he introduced within a hotmold in the solid state, preferably in powdered or granular condition,which 1 disclose in my in whatever we or roiiiiltion the n'iateiinlintroduced wit in the mold, the latter is rotsterl at the more sar speedto develop smilicient centrifugal force and the material is distributediiiiil oriiily over the r cord surface so as to form it relatively thinlayer 10. which (luring the time of its rlistril'iution will henminL-ainerl in fluid. cowlition so to within the displace any air orhobbies and result in This (T taken a very perfect impression hoin outeror surface layer of caused to set or harden preferably by rapidlychilling the mold, for instance by a pad. ll. carried by a trough 2, towhich coolingivac in vill applicslien the T118358 has been thus set, andpreferably While. st'l sli tly pl and sticky. the msteri v ior tileinner layer or horly 1% ol the record is introdu e-(E, the molil beingstill rotated, wherein; the zlistrihiitesi -"el spect to th mately s1 asto form pr Lure.

Unless tioii, No 316,250.

rial of the layer 10 the l consille of inuteri will not "-0 girsc 1eiemlv' to retain its cyniulurwi cooling pail i or other media l) to themold to result in the urn \3 it is desired that the records thematerial.

application Serial No. 337,082. I

and soon as the record has contracted sufficiently to be re moved fromthe mold, the flange 3 .rm'; :2:

moved i'zaii'l the record is lifted out. f, h i

it desired that the record should ho formed with a tapered bore eithersiriootli oi having 3 series concentric ribs, a 'iiurtliei finishingoperation requires to be performed. This finishing of the record may beeffected, While the record is still in a, more or plastic state,although suflieiently hard to re its shape, by in ans of a mandrel 14, fsmooth, shown in 3, or provided. a series of grooves 15, to formconcentric ribs on the record (Fig. 4;) The mandrel 14 mounted to rotateeasily on a stationary stub-shaft 16, maintained at the properangle tothe desired taper to the bore 51nd carried in a vertically movable slide17. The slide 17 is mounted in a, head 18 and adapted to be movedvertically by a lever 19. The head 1?; slides horizontally on a suitablebase 20, being actuated by a, lever Duringthe linishing operation, themolll with its more or less plastic contents is carried i" suitablehuclr 22, so as to be rotated thcrw by, and the lever 23 is operated soas to cause the mandrel 14 to eiiterthe mold, after which tile lever 19is moved to depress the lnarmlrel and result in the displacement of theplastic 5 mess, so as to form a bore of the desired taper and themandrel 14 rotating as the material is displaced, as will be obvious. lfind that in this way a tapered here can be very periectlyiformed in arecord con'ipaiseil so: of material which cannot be eilectively out,While in a plastic state and hence While engaging the meld lsianyinsterisls suitable for the formation of least the interior or duplicatesouriil m5 recorcs re so viseid and sticky when in I 5 1 plasmaemiriitioirtlizit any attempt to 1| them in that state would be mipes byrhsplsci g the material, scribed, by means of mil-stable inanrlrc canGl'lfiClllVGlY films-ii the bores orreec rei'rieiy visciil met ifershlsthat the irwmlwal kept {is lo p ssibi operiition, and it nfore introriled While W old, hence after is molri A make use oi 8. chuck ablecharacter, provided pre lin' I 24 of suit .inziterial, such rubber so asnot to scr cli the farce.- The reoorrl introduced chuck so to be rotatedthereby and out wear of the reproducer stylus, and eliminate scratchingnoises as much as possible. This surfacing layer may be made quite thin,so

that a relatively expensive material for the same can be effectivelyused. An example of a suitable composition from which the surfacinglayer may be formed is the special transparent composition described inmy Patent No. 676,111, dated June 11th, 1901. A' suitable example ofmaterial from whch the inner or body layer may be formed, and whichwhile being extremely cheap is at the same time tough and ofapproximately the same coefficient of expansion as the material abovereferred to, is the following: asphalt 80 parts, stearin pitch 2()parts. In the make up of this composition the ingredients are melted andintimately mixed.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is as follows:

1. A process of making duplicate sound records, which consists inrotating a mold at a high speed, in introducing a charge ,of anextremely amorphous material therein to form a surfacing layer, inpermitting the sur facing layer to set or harden, in then introducingwithin the mold a larger charge of a cheap molten material, and incontinuing the chilling operation until the composite record as a wholehas been set or hardened, substantially as set forth.

2.'-A. process for making duplicate sound records, WhICl'l CODSIStS inrapidly rotating av mold, in introducing therein a charge of a veryamorphous material to form a surfacing layer, in permitting thesurfacing layer to set or harden, in introducing within the mold alarger charge of a cheap molten material, in cooling the mold and itscontents until the material has set and in finally tapering the bore ofthe resulting duplicate record, substantially as set forth.

3. A process of making duplicate sound records, which consists inrapidly rotating a mold, in introducing therein a charge of a veryamorphous material to form a surfacing layer, in permitting thesurfacing layer to set or harden, in introducing within the mold alarger charge of a cheap molten material, in continuing the coolingoperation until the materialhas been set, and in finally dis placing thematerial While in a more or less plastic state to taper the borethereof, sub.- stantially as set forth' 4. A process of making duplicatesoundrecords, which consists in rotating-the mold at a. high speed} inintroducing therein a charge of a very amorphous material to form asurfacing layer, in permitting the surfacing layer to cool and set, inintroducing a cheap molten material within the rotating mold before thesurfacing layer has been entirely hardened, and in continuing therotation of the mold until the duplicate record as a Whole set forth.

This specification signed and witnessed this 26th day ofMay, 1906.

JONAS Vt. AYLSWORTH; 'itnesses FRANK L. DYER, ANNA R. KLEHM.

.has been set and hardened,substantially as

